ethylene or hydrogen

GAS
List of words for the clue ethylene or hydrogen from the crossword:
ALKENE GLYCOL GASES ELEMENT DEUTERIUM ATWT AMMONIA VERMIFUGE TRICHLOROETHYLENE TRICHLOROETHANE TETRACHLOROETHYLENE TETRACHLORETHYLENE TCE OXIDE OLEFINE OLEFIN HELMINTHIC ETHENE ETHANEDIOL